Battery voltage & a couple of dodgy cranks - SV650.org

muzikill · 24-06-15, 10:27 AM

Across the terminals.....

Measuring 12.43v after sitting a week

14.2-14.5 with engine running.

13v with engine off after a long run & dropping 0.02 v every minute or so (probably due to have the multimeter running on it) and i expect settling at the 12.43v mark.

And this is after using a optimiser, i've had a couple of dodgy starts recently where the whole bike doesnt crank & no displaye but then 2nd time is usually does. I did a flick back and forward of the cut off switch & this might have sorted it. Recently i had the front fairing off so the display connector was disconnected. Before i take her to bits, can anyone just confirm if it looks like the batteries borderline on it's way out? The battery (varta) is probably around the 4-5 year old mark.

Cheers btw.

Bibio · 24-06-15, 11:34 AM

sounds like the battery is on its last legs.

Craig380 · 24-06-15, 12:05 PM

+1 on the battery dying. I just got my 2006 K6 which still has the original battery. The dealer told me they like to fit a new battery before selling, but didn't have the correct one in stock. So when I got it home, I checked the old battery.

13.05V two hours after a 50-mile run (engine off). 48 hours later (engine had not been run in the meantime), 12.95V. I'd expect it to be around 12.6 / 12.7 after a week.

It's maybe worth double checking the main earth point is clean and the battery terminals are clean and tight, any problems with those could also contribute to the starter not cranking.

muzikill · 24-06-15, 04:27 PM

http://www.ebay.co.uk/itm/Varta-AGM-...item23253acf63

Looks like i'll be buying a replacement, im unsure of wether this is a good crank type or if im buying a name tbh.

Bibio · 24-06-15, 04:31 PM

i would say this one is better as it has higher cranking amps http://www.ebay.co.uk/itm/Lucas-AGM-...48466531&rt=nc lucas are also a known brand name that usually carries a reliability.

you will find that most branded battery's will come out the same factory anyway.

muzikill · 24-06-15, 05:20 PM

Cheers for the advice bibio & craig, bullet bit & new battery ordered using bibio's link.

Rebranding, one of my pet hates bibio & im a stickler for trying to find out the cheaper version.

yorkie_chris · 25-06-15, 07:13 AM

Those dodgy starts sound more like a loose connection to me.

muzikill · 25-06-15, 09:51 AM

Itll be the emergency cut off switch yorkie im sure of it. It just sits there doing nothing with the elements creeping in doesnt it! A few mad flicks to ensure a clean connection usually sorts it. I really should do it properly and dismantle it but my heated grip is going to make it a bugger to remove.

Sent from my GT-I9505 using Tapatalk

25-06-15, 11:26 AM

If it's any consolation to getting a new battery, check out MDS batteries. Forum members get a discount and their turn around is amazing (Mon-Fri).
I've no affiliation to them, just recently bought a Yuasu battery for a K4.

muzikill · 25-06-15, 11:45 AM

Quote:

Originally Posted by Stepmg8255

If it's any consolation to getting a new battery, check out MDS batteries. Forum members get a discount and their turn around is amazing (Mon-Fri).
I've no affiliation to them, just recently bought a Yuasu battery for a K4.

Already bought but a good reminder for anyone else thinking about a replcaement soon

24-06-15, 10:27 AM	#1
muzikill Member Mega Poster Join Date: Jul 2005 Location: Dunfermline Posts: 1,712	Battery voltage & a couple of dodgy cranks Across the terminals..... Measuring 12.43v after sitting a week 14.2-14.5 with engine running. 13v with engine off after a long run & dropping 0.02 v every minute or so (probably due to have the multimeter running on it) and i expect settling at the 12.43v mark. And this is after using a optimiser, i've had a couple of dodgy starts recently where the whole bike doesnt crank & no displaye but then 2nd time is usually does. I did a flick back and forward of the cut off switch & this might have sorted it. Recently i had the front fairing off so the display connector was disconnected. Before i take her to bits, can anyone just confirm if it looks like the batteries borderline on it's way out? The battery (varta) is probably around the 4-5 year old mark. Cheers btw. __________________ Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. Last edited by muzikill; 24-06-15 at 10:29 AM.

24-06-15, 11:34 AM	#2
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,540	Re: Battery voltage & a couple of dodgy cranks sounds like the battery is on its last legs.

24-06-15, 12:05 PM	#3
Craig380 Member Mega Poster Join Date: May 2015 Posts: 1,238	Re: Battery voltage & a couple of dodgy cranks +1 on the battery dying. I just got my 2006 K6 which still has the original battery. The dealer told me they like to fit a new battery before selling, but didn't have the correct one in stock. So when I got it home, I checked the old battery. 13.05V two hours after a 50-mile run (engine off). 48 hours later (engine had not been run in the meantime), 12.95V. I'd expect it to be around 12.6 / 12.7 after a week. It's maybe worth double checking the main earth point is clean and the battery terminals are clean and tight, any problems with those could also contribute to the starter not cranking.

24-06-15, 04:27 PM	#4
muzikill Member Mega Poster Join Date: Jul 2005 Location: Dunfermline Posts: 1,712	Re: Battery voltage & a couple of dodgy cranks http://www.ebay.co.uk/itm/Varta-AGM-...item23253acf63 Looks like i'll be buying a replacement, im unsure of wether this is a good crank type or if im buying a name tbh. __________________ Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed.

24-06-15, 04:31 PM	#5
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,540	Re: Battery voltage & a couple of dodgy cranks i would say this one is better as it has higher cranking amps http://www.ebay.co.uk/itm/Lucas-AGM-...48466531&rt=nc lucas are also a known brand name that usually carries a reliability. you will find that most branded battery's will come out the same factory anyway. Last edited by Bibio; 24-06-15 at 04:32 PM.

24-06-15, 05:20 PM	#6
muzikill Member Mega Poster Join Date: Jul 2005 Location: Dunfermline Posts: 1,712	Re: Battery voltage & a couple of dodgy cranks Cheers for the advice bibio & craig, bullet bit & new battery ordered using bibio's link. Rebranding, one of my pet hates bibio & im a stickler for trying to find out the cheaper version. __________________ Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. Last edited by muzikill; 24-06-15 at 06:05 PM.

25-06-15, 07:13 AM	#7
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Battery voltage & a couple of dodgy cranks Those dodgy starts sound more like a loose connection to me. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

25-06-15, 09:51 AM	#8
muzikill Member Mega Poster Join Date: Jul 2005 Location: Dunfermline Posts: 1,712	Re: Battery voltage & a couple of dodgy cranks Itll be the emergency cut off switch yorkie im sure of it. It just sits there doing nothing with the elements creeping in doesnt it! A few mad flicks to ensure a clean connection usually sorts it. I really should do it properly and dismantle it but my heated grip is going to make it a bugger to remove. Sent from my GT-I9505 using Tapatalk __________________ Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. Last edited by muzikill; 25-06-15 at 11:45 AM.

25-06-15, 11:26 AM	#9
Stepmg8255 Guest Posts: n/a	Re: Battery voltage & a couple of dodgy cranks If it's any consolation to getting a new battery, check out MDS batteries. Forum members get a discount and their turn around is amazing (Mon-Fri). I've no affiliation to them, just recently bought a Yuasu battery for a K4.

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